Q827L9 · RISB_STRAW
- Protein6,7-dimethyl-8-ribityllumazine synthase
- GeneribH
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids161 (go to sequence)
- Protein existenceInferred from homology
- Annotation score2/5
Function
function
Catalyzes the formation of 6,7-dimethyl-8-ribityllumazine by condensation of 5-amino-6-(D-ribitylamino)uracil with 3,4-dihydroxy-2-butanone 4-phosphate. This is the penultimate step in the biosynthesis of riboflavin.
Catalytic activity
- (2S)-2-hydroxy-3-oxobutyl phosphate + 5-amino-6-(D-ribitylamino)uracil = 6,7-dimethyl-8-(1-D-ribityl)lumazine + phosphate + 2 H2O + H+
Pathway
Cofactor biosynthesis; riboflavin biosynthesis; riboflavin from 2-hydroxy-3-oxobutyl phosphate and 5-amino-6-(D-ribitylamino)uracil: step 1/2.
Features
Showing features for binding site, active site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 26 | 5-amino-6-(D-ribitylamino)uracil (UniProtKB | ChEBI) | |||
Binding site | 58-60 | 5-amino-6-(D-ribitylamino)uracil (UniProtKB | ChEBI) | |||
Binding site | 81-83 | 5-amino-6-(D-ribitylamino)uracil (UniProtKB | ChEBI) | |||
Binding site | 86-87 | (2S)-2-hydroxy-3-oxobutyl phosphate (UniProtKB | ChEBI) | |||
Active site | 89 | Proton donor | |||
Binding site | 114 | 5-amino-6-(D-ribitylamino)uracil (UniProtKB | ChEBI) | |||
Binding site | 128 | (2S)-2-hydroxy-3-oxobutyl phosphate (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Cellular Component | riboflavin synthase complex | |
Molecular Function | 6,7-dimethyl-8-ribityllumazine synthase activity | |
Biological Process | riboflavin biosynthetic process |
Keywords
- Molecular function
- Biological process
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended name6,7-dimethyl-8-ribityllumazine synthase
- EC number
- Short namesDMRL synthase ; LS ; Lumazine synthase
Gene names
Organism names
- Strain
- Taxonomic lineageBacteria > Actinomycetota > Actinomycetes > Kitasatosporales > Streptomycetaceae > Streptomyces
Accessions
- Primary accessionQ827L9
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Chain | PRO_0000134815 | 1-161 | 6,7-dimethyl-8-ribityllumazine synthase | ||
Structure
Sequence
- Sequence statusComplete
- Length161
- Mass (Da)16,809
- Last updated2003-06-01 v1
- Checksum99201DF61C43C13D
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
BA000030 EMBL· GenBank· DDBJ | BAC74616.1 EMBL· GenBank· DDBJ | Genomic DNA |